Cook the noodles according to the package instructions. Drain and set aside.
In a large pan, melt the butter over medium heat. Add the minced garlic and sauté until fragrant, about 30 seconds.
Stir in the soy sauce, oyster sauce, hoisin sauce, brown sugar, sesame oil, and red pepper flakes. Mix well.
Add the cooked noodles to the pan and toss to coat evenly with the sauce.
Garnish with chopped green onions and toasted sesame seeds before serving. Enjoy!